Having built a thriving colony on Mars a team of six pioneers venture out to discover the origins of the humanoids whose skeletal remains and artefacts, including a scout ship, have been discovered first on the Moon and then on Mars itself. For Ken, Ivan, Jack, Jane, Michelle and Wendy this journey will take half a lifetime, hence the name of their transport - the Generation ship. It will be a journey of developing skills and familial relationships, but will it end in a successful encounter with the Space-farers? And if so, how will Earth be on their return? In United Nations Frontier Service 2 John A. Wells builds a traditional science fiction tale that will entertain and absorb children and adults alike.